This variable oscillator with power step for alarms was found in an American documentation from the 90's. The power transistor must be equipped with a heat sink.
Found in an American publication in 1967, this circuit generates pulses for the triggering of a LASER of...
The maximum current of this circuit is 1.5 A. The circuit has the formulas next to the diagram to...
This biestable vox circuit was found in an old documentation. The circuit makes use of components of...